Your images can be reduced almost three-quarters in size using Pic Engine, while maintaining excellent quality. In most cases, human eyes cannot detect changes.
With Normal, Aggressive and Ultra levels, keep the best quality possible or seek the ultimate performance. As a result, your images will take up about 50% less space and your bandwidth savings could be enormous, depending on how many page impressions you get.
One of Google's ranking factors is website speed. By compressing your images, you will gain precious seconds that will help your website reach the top of Google SERPS.